mile, consist of 62 consecutive sheets of antiquarian paper as
constructed by the British and of 61 as constructed by the American
commission. A general map has also been constructed on a scale of 8
miles to 1 inch by the British and of 10 miles to 1 inch by the American
commission, upon which the before-mentioned sheets are represented.

The following portions of the boundary have been laid down by the
British commission, on detached maps, on a scale of 12 inches to 1 mile,
which have been signed by both commissioners:

Grand Falls of the St. John, including the intersection of that
river by the north line; islands of the St. John; the outlet of Lake
Pohenagamook; the turning point of the boundary on the Northwest Branch
of the St. John; the intersection of the Southwest Branch by the
parallel of latitude 46° 25'; the source of the Southwest Branch; the
source of Halls Stream; the intersection of Halls Stream by the west
line; Rouses Point; St. Regis; Derby.

But similar maps have not been prepared by the American commission,
because during the interval between the finishing of the maps of the
British commission and those of the American it was thought that the
maps already constructed upon a scale of 4 inches to 1 mile represented
the boundary with sufficient clearness and accuracy.

The astronomical observations were begun at the Grand Falls early in
June, 1843, and were carried up the St. John River to the Northwest
Branch by a chain of stations, which, together with the results
obtained, are tabulated in the appendix accompanying this report.

From the valley of the St. John an astronomical connection was made with